Protein expression of matrix metalloproteinase (MMP-1, -2, -3, -9 and -14) in Ewing family tumors and medulloblastomas of pediatric patients - Mateo, Elvis Cueva; Motta, Fabio José Nascimento; Queiroz, Rosane Gomes de Paula; Scrideli, Carlos Alberto; Tone, Luiz Gonzaga (Journal of Pediatric Genetics, 2012)